Daniel Alexander Castellanos, M.D.

NPI 1003298126ActiveIndividual· Pediatrics, Pediatric Cardiology· Boston, MA

Pediatrics, Pediatric Cardiology (M.D.) in Boston, Massachusetts, trained at Florida International Univ, College of Medicine (class of 2013). Medicare paid $1,233 for services to 16 patients in 2024. Glaxosmithkline, LLC. reported $237.44 in payments in 2025, mostly food and beverage.

Overview

NPI	1003298126
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	Jun 25, 2015
Last updated in NPPES	Mar 11, 2021
Certified by provider	Mar 11, 2021

Specialties and licenses

Taxonomy	Code	License	State
Pediatrics, Pediatric Cardiology Primary	2080P0202X	283956	MA
Pediatrics, Pediatric Cardiology	2080P0202X	Q8849	TX
Pediatrics, Pediatric Cardiology	2080P0202X	ETL5309	MA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Cardiovascular Disease (Cardiology) (MA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	16
Services billed	51 across 8 procedure codes
Paid by Medicare	$1,233

Medicare sources and data years

Education and affiliations

Medical school	Florida International Univ, College of Medicine
Graduation year	2013
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Pediatric Medicine